Raknetify2

Raknetify2 preserves vanilla clientbound packet bundles in multichannel mode when both endpoints support them. Single-channel bundles use their normal route. Mixed-channel bundles wait for earlier writes and complete before later writes proceed. Older peers retain their existing multichannel behavior.

Client food prediction now defers to the server only for the active multichannel player. Velocity and BungeeCord forward genuine backend keepalive challenges in both delivery modes.

The build now requires explicit routes for vanilla play packets and publishes Fabric through the verified-artifact workflow. The transport now owns its frame scheduling policy directly.